* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: Arial, sans-serif;
  line-height: 1.5;
}

header {
  color: #fff;
}

nav {
  background-color: #333;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 999;
  padding: 1rem;
}

nav h1 {
  font-size: 2rem;
}

nav ul {
  display: flex;
  list-style: none;
}

nav li {
  margin-left: 1rem;
}

nav a {
  color: #fff;
  text-decoration: none;
}

.hero-image {
  height: 500px;
  background-image: url('https://via.placeholder.com/1500x500');
  background-size: cover;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
}

.hero-image h1 {
  color: #fff;
  font-size: 4rem;
  text-align: center;
}

.main-container {
  display: flex;
  justify-content: space-between;
  margin-top: 2rem;
  margin-bottom: 2rem;
}

.main-container .main-content {
  flex: 2;
  padding: 0 1rem;
}

.main-container .main-content h2 {
  margin-top: 2rem;
  margin-bottom: 1rem;
}

.main-container .main-content h3 {
  margin-bottom: 0.5rem;
}

.main-container .main-content p {
  margin-bottom: 1.5rem;
}

.main-container .main-content .post-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 1.5rem;
}

.main-container .main-content .post-icons {
  display: flex;
}

.main-container .main-content .post-icons span {
  margin-right: 1rem;
}

.main-container .main-content .post-author {
  display: flex;
  align-items: center;
}

.main-container .main-content .byline {
  margin-left: 1rem;
}

.main-container .sidebar {
  flex: 1;
  padding: 0 1rem;
}

.main-container .sidebar h2 {
  margin-bottom: 1rem;
}

.main-container .sidebar .post-links li {
  margin-bottom: 1rem;
}

.main-container .sidebar .post-links a {
  color: #333;
  text-decoration: none;
}

.footer {
  background-color: #eee;
  padding: 2rem;
}

.footer-container {
  display: flex;
  justify-content: space-between;
}

.footer-column {
  flex: 1;
  margin-right: 2rem;
}

.footer-column:last-child {
  margin-right: 0;
}

.footer-column h3 {
  margin-bottom: 1rem;
}

.footer-column ul li {
  margin-bottom: 0.5rem;
}

.footer-column ul a {
  color: #333;
  text-decoration: none;
}

@media (max-width: 768px) {
  nav ul {
    display: none;
  }
  .hamburger {
    display: block;
  }
  .main-container {
    flex-direction: column;
  }
  .main-container .main-content {
    padding: 1rem;
  }
  .main-container .sidebar {
    padding: 1rem;
  }
  .footer-container {
    flex-direction: column;
  }
  .footer-column {
    margin-right: 0;
    margin-bottom: 2rem;
  }
}